Improvement in snath attachments



.0. SEARS. Snath Attachments.

No; 221,618. Patented Now-11,1879.

UNITED Sui-Arne 1T Ont-Ion.

'GHA'RLES SEARS, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN SN'ATH ATTACHMENTS.

Specification forming part of Letters Patent No. {221,61 8, datedNovember 11, 1879; application filed October 21, 1879.

, To all whom it may concern:

Be it known that I, CHARLES Scans, of the city of Chicago, in the countyof Cook, of the State of Illinois, have invented a new and usefulImprovement in Attachments for Snaths, of which the following is aspecification, the annexed drawings and letters of reference markedthereon being made a part thereof, and reference being had thereto.

My invention consists of a device for attachment to the heel of a snathfor fastening to the latter a scythe, and is composed of a metal plate,A, provided with ratchets a and a a clamp, B, a lever, 0, provided witha cam, c, an adj usting-wedge, D, a movable socket-plate, E, providedwith ratchets e and e", and aflexible 'padfEThe respective parts areconstructed and arranged in relation to each other, and the device isapplied and operated upon the snathfas hereinafter more fully andclearly described and set forth, for the purpose of enabling othersskilled in the art thereto pertainlng to make and use the same.

In making this device I have provided an attachment for snaths forfastening scythes that is free from adjusting screws and nuts, and inusing which no portable'tool is required to attach the scythe to adjustit upon or remove it from the snath, the device being operated by thelever C.

In the drawings, Figure 1 is a perspective view of my device completeattached to a snath and securing thereto a scythe, the lever beingpartly raised. Fig. 2 is a plan view of the under side of the samewithout the scythe. Fig. 3 is aperspective view of the adjustingwedge,and Fig.4 is a like view of the-movable socket-plate.

Letters of like name and kind refer to like parts in each of the figuresof the drawings.

In my device the metal plate A has at or near one end, at each sideedge, aperpendicular side flange, a, provided with a groove, a, forholding and being operative within the clamp B. The latter is U orclevis" shaped. The ends of the clamp projecting above the side flanges,a, are, respectively, provided with a journal-box, b, and engage thelateral lugs c of the lever G. The cam c of the latter operates upon thewedge D placed upon the flexible pad F resting upon the side flanges, a,the pad F being made of soft rubber or other suitable flexible material.The cam c of thelever 0 con.- sists of a protuberance projectingobliquely downward, and bearing upon the wedge D on the opposite side ofthe journal-bearings or fulcrum from the lever (3, so that when thelatter is pushed home upon the snath 9 three bearings are formed-one atthe fulcrum, one near the free end of the lever, and one at the cam.

The plate has, near the end opposite the one having the side flanges,amortise, m of which the end edge nearest the flanges has a series ofcog-ratchets, a and a like series of ratchets, a is formed at the endedge of the plate A nearest the mortise a On the under surface of theplate A a groove, to, is formed, commencing at a point near the mortise,and extending longitudinally to the end of the plate, forming apassageway for the nipple h of the scythe h. I

The device is attached to the heel of the snath g by means of screws, ormother suita ble manner. in such a position that the plate A is apliedto the flattened surface g of the under side of the snath g, the heel ofthelatter being out to a rectangular shape and fitted to the spacebetween the side flanges, a, and the plate A. In the flattened undersurface g of the latter a groove, 9 is cut, corresponding with thegroove a of the plate A to accommodate the latter, and on the uppersurface of the snath g a longitudinal groove, g, is cut to accommodatethe lever O. The movable socket-plate E is, at the portion thereofcontaining the mortise e, raised above the level of the ends 6 6 so thatwhen placed within the mortise a of the plate 01 the plates A and E havethe same level. The ends 6 e of the socket-plate E project under theplate A, and are movable between the latter and the snath g, andone ofsaid ends projects beyond the ratchet a of the plate A, and is providedwith the ratchet-lug 6 The ratchet e is formed on the shoulder formed bythe raised portion of the socket-plate E, which is next to the ratchet aof the plate A. The ratchets of the socket-plate E engage with theratchets of the plate A, by means of which arrangement the socket-plateE is made adjustable for the purpose of adjusting the scythe upon thesnath.

scythe is pushed inward between the clamp B 1 and the plate A, thenipple h of the scythe passing through the groove (1, when thesocketplate E is adjusted upon the ratchets for the purpose of adjustingthe scythe h, and the lever is pusheti down into the groove 9 of thesnathgfor the purpose of fastening the scythe by the clamp B.

Having thus described my device, I do not claim as my invention, in asnath attachment for fastening scythes, the combination of a clamp,cam-lever, wedge, and pad, or any one of the said parts, knowing: thatlike parts have heretofore been used for like purposes; but

What I do claim as my invention, and desire to secure by Letters Patent,is-- 1. In a snath attachment for fastening scythes, the combination ofthe lever 0, provided with the cam c, the clamp B, and the grooves a, ofthe side flanges, a, of the plate A, as constructed and arranged, forthe purposes set forth.

2. In a snath attachment for fastening scythes, the socket-plate E,provided with ratchets e and 0 in combination with the mortise a andratchets a and a! of the plate A, substantially as described, for thepurpose set forth.

3. In combination with the snath g, the plate A, having side flanges, a,with grooves a, a mortise, a, and ratchets a and a", the clamp B, thelever C, with cam c, and the socket-plate E, with ratchets c and 0',constructed and arranged as described, for the purposes set forth.

In witness whereof I hereunto set my hand.

CHARLES SEARS.

In presence of- AUGUSTUS T. SEARS, LOUIS GOSSELIN.

